EP0666651A3 - Apparatus and method for lempel ziv data compression with management of multiple dictionaries in content addressable memory. - Google Patents
Apparatus and method for lempel ziv data compression with management of multiple dictionaries in content addressable memory. Download PDFInfo
- Publication number
- EP0666651A3 EP0666651A3 EP95300346A EP95300346A EP0666651A3 EP 0666651 A3 EP0666651 A3 EP 0666651A3 EP 95300346 A EP95300346 A EP 95300346A EP 95300346 A EP95300346 A EP 95300346A EP 0666651 A3 EP0666651 A3 EP 0666651A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- management
- data compression
- addressable memory
- content addressable
- multiple dictionaries
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3082—Vector coding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T9/00—Image coding
- G06T9/005—Statistical coding, e.g. Huffman, run length coding
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
- H03M7/3084—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method
- H03M7/3088—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction using adaptive string matching, e.g. the Lempel-Ziv method employing the use of a dictionary, e.g. LZ78
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US192878 | 1994-02-07 | ||
| US08/192,878 US5455576A (en) | 1992-12-23 | 1994-02-07 | Apparatus and methods for Lempel Ziv data compression with improved management of multiple dictionaries in content addressable memory |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0666651A2 EP0666651A2 (en) | 1995-08-09 |
| EP0666651A3 true EP0666651A3 (en) | 1996-05-22 |
| EP0666651B1 EP0666651B1 (en) | 2000-07-19 |
Family
ID=22711395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95300346A Expired - Lifetime EP0666651B1 (en) | 1994-02-07 | 1995-01-20 | Apparatus and method for lempel ziv data compression with management of multiple dictionaries in content addressable memory |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5455576A (en) |
| EP (1) | EP0666651B1 (en) |
| JP (1) | JP3309028B2 (en) |
| DE (1) | DE69518022T2 (en) |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881075A (en) * | 1987-10-15 | 1989-11-14 | Digital Equipment Corporation | Method and apparatus for adaptive data compression |
| US5010345A (en) * | 1989-12-28 | 1991-04-23 | International Business Machines Corporation | Data compression method |
| EP0573208A1 (en) * | 1992-06-01 | 1993-12-08 | Hewlett-Packard Company | Apparatus and method for managing multiple dictionaries in content addressable based data compression |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4929946A (en) * | 1989-02-09 | 1990-05-29 | Storage Technology Corporation | Adaptive data compression apparatus including run length encoding for a tape drive system |
| US5342054A (en) * | 1993-03-25 | 1994-08-30 | Timecap, Inc. | Gold practice apparatus |
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1994
- 1994-02-07 US US08/192,878 patent/US5455576A/en not_active Expired - Lifetime
-
1995
- 1995-01-20 DE DE69518022T patent/DE69518022T2/en not_active Expired - Lifetime
- 1995-01-20 EP EP95300346A patent/EP0666651B1/en not_active Expired - Lifetime
- 1995-01-31 JP JP01334795A patent/JP3309028B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881075A (en) * | 1987-10-15 | 1989-11-14 | Digital Equipment Corporation | Method and apparatus for adaptive data compression |
| US5010345A (en) * | 1989-12-28 | 1991-04-23 | International Business Machines Corporation | Data compression method |
| EP0573208A1 (en) * | 1992-06-01 | 1993-12-08 | Hewlett-Packard Company | Apparatus and method for managing multiple dictionaries in content addressable based data compression |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69518022T2 (en) | 2000-12-21 |
| JP3309028B2 (en) | 2002-07-29 |
| EP0666651B1 (en) | 2000-07-19 |
| DE69518022D1 (en) | 2000-08-24 |
| JPH07273667A (en) | 1995-10-20 |
| EP0666651A2 (en) | 1995-08-09 |
| US5455576A (en) | 1995-10-03 |
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